384 ^OLID^. 



trumpet-shaped sheaths ; veil small, simple ; gills ovate, muri- 

 cated, in single series down on each side of the back ; lingual 

 membrane slender, with above 100 recurved, denticulated teeth, 

 in single series ; foot very narrow. 



The stomach is ramified, and the liver is entirely contained in 

 the dorsal processes, which fall off readily when the animal is 

 handled, and are soon renewed. 



GELLiNA, Gray. Head simple ; papillse or gills smooth. D. 

 offinis^ d'Orb. (xci, 21). North Sea. 



DOTiLLA, Bergh. Distinct from Doto by three rows of plates 

 in the radula. 



Hero, Loven. 



Syn. — Cloelia, Loven. Distr. — H. formosa^ Lov. 



Animal with no mantle ; tentacles two, linear, simple, non- 

 retractile ; veil plain, produced at the sides, gills branched or 

 umbellated. Tongue with a large central denticulated spine, 

 and two simple lateral spines. Jaws corneous. 



Heromorpha, Bergh. 



Distr. — H. Antillensis, Bergh. West Indies. 



Agreeing with Hero in the general structure of the head and 

 especially of the tentacles, but with cup-shaped rhinophores, of 

 which the club is simple ; also closely allied to Doto, but with 

 simple papillas. 



Family ^OLID^. 



Animal with papillose gills, arranged along the sides of the 

 back ; tentacles subulate, sheathless, non-retractile ; lingual teeth 

 0'1"0 ; jaws horny ; ramifications of the stomach and liver 

 extending into the dorsal papillae ; excretory orifices on the right 

 side ; skin smooth, without spicula ; no distinct mantle. 



Subfamily GLA UGIN^. 

 Branchiae papillose, in groups ; foot rudimentary. 



Glaucus, Forster. 



JEtym. — Glaucus, a sea-deity. 



Syn. — Pleuropus, Raf. Eucharis, Peron. 



Distr. — Y sp. Atlantic, Pacific. Found on floating sea-weed; 

 devours small sea-jellies, Porpitse and Yelellge. — Bbnnet. G. 

 radiatus, d'Orb. (xci, 28). 



Animal elongated, slender; foot linear, channeled ; tentacles 

 four, conical ; jaws horny ; teeth in single series, arched and 

 pectinated ; gills slender, cylindrical, supported on three pairs 

 of lateral lobes ; stomach giving off" large coeca to the tail and 

 side-lobes ; liver contained in the papillae ; sexual orifice beneath 

 first dextral papilla, vent behind second papilla ; spawn in a close 

 spiral coil. 



